Louis Theroux: Gambling in Las Vegas is a TV documentary written and presented by Louis Theroux. He heads to Las Vegas, to reveal the world behind the myths of casino culture.[1][2][3] Among the people he meets are two of the casino's 'high-rollers' and an employee who looks after them as well as a retired doctor who says she has gambled away $4million in seven years. The programme was first broadcast on 4 February 2007 on BBC Two.

The Times newspaper gave the documentary a positive review.[4]The Sydney Morning Herald commented "There's an element of prurient ogling at the sheer, mind-boggling waste but Theroux also attempts to unravel the troubled relationship between the largesse the casino bestows upon its favourites and the resulting gratitude and loyalty of the gamblers - many of whom fall into the "addicted" category, much as they would deny it."[5]